susan mcginnis has the latest from washington. >> reporter: health and human services secretary kathleen sebelius testified before congress after getting some encouraging news about healthcare.gov. her department says about 260,000 americans signed up for insurance in november, more than double the number in october. that brings the two-month total to nearly 365,000. it's a major improvement but far from the original goal of $1.2 million. >> our work is not done until everigy elible american has the opportunity to access affordable coverage. >> reporter: sebelius said the website is functioning much better than it launched and is calling for an investigation into the disastrous rollout. >> the initial launch of healthcare.gov was flawed, frustrating and unacceptable. >> reporter: a new cbs news- "new york times" poll showed 47% of those polled supported the law. now 39% say they approve. republicans in congress continue to express their disapproval. >> millions of americans are being harmed by this law. my constituents do not trust the administration when it comes to the affordable care